1991/1992 season: Novice Hurdles Martha's Son began his racing career in a
novice hurdle at
Stratford Racecourse on 28 December 1991. After the race, Forster in a typically downbeat assessment told Ward-Thomas "I will never, as long as I train, win a steeplechase with this horse. He will never jump fences". Starting a
25/1 outsider he recovered from interference to take the lead at the second last hurdle and won by five
lengths from the
Jenny Pitman-trained Lusty Light. On his next appearance in January, the gelding started favourite but fell at the second last when disputing the lead with the eventual winner Knight In Side. At
Fakenham Racecourse a month later he was again favoured in the betting but was beaten ten lengths into second by Steveadon. On 7 March Martha's Son was matched against more experienced opponents when he contested a
handicap hurdle for amateur riders at
Sandown Park Racecourse. Ridden by Captain C Ward-Thomas he carried 146 pounds and finished ninth of the ten runners.
1992/1993 season: Hurdle races Martha's Son began his second season on 12 October with a win in a handicap hurdle at
Fontwell Racecourse, beating Tel E Thon by five lengths under a weight of 144 pounds. After finishing third in a similar event at
Huntingdon Racecourse twelve days later he won again at
Wincanton Racecourse in November, carrying 150 pounds and beating seven opponents at odds of 13/2. He continued to rise in the handicap weights and carried 153 pounds when winning a more valuable race at
Newbury Racecourse in January.
Carl Llewellyn who had ridden the horse in his last four races, was replaced by
Brendan Powell when Martha's Son contested the
Lanzarote Hurdle at
Kempton Park Racecourse later that month. The gelding began to struggle after the fifth hurdle and was pulled up before the last. He did not race again that season.
1993/1994 season: Novice Chases Martha's Son began his next season in handicap hurdles, finishing fourth at Newbury in October and second at Sandown in October. In the latter race he was ridden by
Rodney Farrant, who became his regular jockey. He was then switched to larger obstacles and began to compete in novice chases. He made a successful chasing debut at
Nottingham Racecourse on 3 December, taking the lead after the last and winning by three and a half lengths from the favourite Rodeo Star. When matched against more experienced opposition in a handicap chase at Huntingdon in January and won again, beating Spree Cross by two and a half lengths. Returning to novice company at the same track in March, he remained unbeaten over fences beating three opponents at odds of 4/6. Almost all of the geldings races up to this point had been over two miles, but for his final appearance of the season he was moved up to two and a half miles for a novice chase at Sandown on 29 March. Starting at odds of 8/15, he took the lead at the second last fence and accelerated clear in the closing stages to win by fourteen lengths from Yorkshire Gale.
1994/1995 season: Steeplechases On his first appearance of the 1994/1995 season Martha's Son faced the
Rowland Meyrick Chase winner General Pershing and the Northumberland Gold Cup winner Clay County in a two-mile handicap chase at
Haydock Park Racecourse on 2 November. He took the lead approaching the last fence and went clear on the run-in to win by eight lengths from Clay County, taking his winning run to five. Three weeks later Martha's Son was moved up in class to contest the Peterborough Chase at Huntingdon in which he was matched against the 1993
Champion Chaser Deep Sensation. Martha's Son led from the ninth fence until the final obstacle when he made a bad jumping error and was overtaken by Deep Sensation, but rallied on the run-in to regain the advantage and won by one and a quarter lengths. Moved up to two miles five furlongs on Boxing Day, Martha's Son won his seventh consecutive race when he won the Mid Season Chase at Wincanton. Martha's Son's first race of 1995 saw him carrying 149 pounds and starting at odds of 3/1 for the Grade 2 Victor Chandler Handicap Chase over two miles at
Ascot Racecourse on 14 January. He was opposed by
Viking Flagship, Storm Alert (twice winner of the
United House Construction Chase), Deep Sensation, Uncle Ernie (
Aintree Chase) and Coulton (
Mersey Novices' Hurdle). Farrant restrained the gelding in the early stages before moving up to take the lead from Coulton at the second last and stayed on strongly on the run-in to win by two and a half lengths from Egypt Mill Prince. On 8 February Martha's Son attempted to extend his winning run to nine when he started favourite for the Grade 1 Comet Chase over two and a half miles at Ascot. His opponents again included Coulton and Deep Sensation as well as the
Tripleprint Gold Cup winner Amtrak Express. He overtook Coulton at the third last and went clear to win "very easily" by seven lengths despite being eased down by Farrant in the closing stages. On his final appearance of the season Martha's Son contested the
Melling Chase at
Aintree Racecourse and started 11/10 favourite ahead of Viking Flagship, who had won his second Champion Chase at the
Cheltenham Festival three weeks earlier. After taking the lead after the second last he was overtaken on the run-in and sustained his first defeat in seventeen months as he finished third, beaten a short head and a length by Viking Flagship and Deep Sensation.
1995/1996 season: Steeplechases Martha's Son made only one appearance in the 1995/1996 season. At Huntingdon in November he started 10/11 favourite for the Peterborough Chase but was beaten a neck by the
Nicky Henderson-trained
Travado, to whom he was conceding four pounds. The veteran
Docklands Express, winner of the
Whitbread Gold Cup,
Martell Cup and two editions of the
Racing Post Chase was more than thirty lengths back in third. Martha's Son was being prepared for a run in the
King George VI Chase at Kempton on Boxing Day when he sustained an injury which ended his season.
1996/1997 season: Steeplechases After being off the racecourse for fifteen months, Martha's Son returned in the two-mile Emblem Chase at Kempton Park on 22 February 1997. Ridden by
Norman Williamson, he had little opportunity to show his wellbeing as he fell at the second fence of a race won by Viking Flagship. In order to prepare the horse for his next run he was taken to
Bangor-on-Dee Racecourse for a schooling session but his participation in the Champion Chase at Cheltenham was in doubt until the last moment owing to the firm ground. On 12 March 1997, Martha's Son made his first and only appearance at the Cheltenham Festival when he was one of six horses to contest the thirty-ninth running of the Champion Chase. The six-year-old Strong Promise headed the betting after beating
One Man at level weights in the Comet Chase. The joint-second favourites were Viking Flagship (winner in 1994 and 1995) and the Irish challenger
Klairon Davis (winner in 1996). Ask Tom, the winner of the
Maghull Novices' Chase and the 1997 Victor Chandler Chase came next in the betting market ahead of Martha's Son, who started at 9/1. Farrant held up Martha's Son at the rear of the field before making progress approaching the third last where the leader Strong Promise made a bad mistake allowing Ask Tom to take the lead. Martha's Son made further progress on the outside and jumped the second last in a close fourth behind Ask Tom, Viking Flagship and the weakening Strong Promise before moving into third on the final turn. Approaching the final fence, Martha's Son moved up between Viking Flagship on the inside and Ask Tom and the outer and then jumped into the lead at the obstacle. He steadily increased his advantage on the run-in and won by two and a half lengths from Ask Tom, with Viking Flagship half a length away in third. The winning owners, Ward-Thomas and Hartigan were both seriously ill at the time and entered the winners circle on
crutches. Ward-Thomas said "We had to run, as none of us may be around next year". Paddy Hartigan died less than four months later. After the race Forster said "He's got two speeds. One is totally switched off and relaxed. The other is when you press the button and he fires away". Forster's assistant Henry Daly later recalled "Norman Williamson was on Strong Promise and he couldn't believe his eyes at the speed with which Martha's Son jumped past his horse. Martha's Son destroyed them." ==Final race, retirement and death==